Shaping-machine.



Patented Nov. 21, 1916;

K. JUNG.

SHAPING MACHINE. APPLICATION FILED 050.30. 1914.

TINTTED TATE$ PATENT @FFICE.

KARL JUNG, OF BERLIN, GERMANY, ASSIGNQR TO THE SAMSONXVERK, GESELLSGHAFT MIT BESCI-IRANKTER I-IAFTUNG, OF BERLIN, GERMANY, A CORPORATION.

SHAPING-MACHINE.

Specification of Letters Patent.

Patented Nov. 21, 1916.

To all w 700m it may concern Be it known that I, KARL J UNG, manager, a subject of-the German Emperor, and residing at 58/59 Grossbeerenstrasse, Berlin, State of Prussia, in the German Empire, have invented certain new and useful'Improvements in or Relating to Shaping Machines, of which the following is a specification.

This invention relates to shaping machines in which the slide carrying the tool is driven by means of a rocking lever. The rocking lever, which is fulcrumed in the frame of the machine and is moved to and fro by a link, for example, must havean axis of oscillation located both parallel to the driving member and exactly at right angles to the direction of movement of the slide. In spite of the axle of the rocking lever having been mounted very exactly, heretofore it was not possible to prevent the end attached to the slide from executing a small rotatory movement relatively to the slide, and the consequence was that the slide jammed in its guides or the tool was guided inexactly, and this could not .be obviated by enabling the rocking lever to move laterally relatively to the slide. According to my invention I obviate these defects by providing between the rocking lever and the slide a connection Which without possessing any play in the direction of motion of the slide, admits of the rocking lever turning relatively to the slide.

Another object of my invention is to provide a wheel of improved construction for driving the rocking leverf In order to mount this driving wheel in the machine, it was heretofore necessary to insert in the rear wall, in which the wheel is journaled, a bushing of a size corresponding to the diameter of the wheel, or to provide in the front wall an aperture so large that the wheel could be placed through the same. This weakening of thesupporting walls of the machine is a serious defect because, when heavy work is being done, the guides of the slide yield and the work is done nonuniformly. According to my invention,the wheel used for driving the rocking lever and its pivot pin are made as two separate members, so that the wheel can be introduced from above and then be connected with its pivot.

To these ends, my invention consists in the construction, arrangement and combination of parts described hereinafter and pointedv out in the claims.

. Several illustrative embodiments of my invention are represented by way of example in the accompanying drawing, wherein Figure 1 is a vertical cross-section through part of a shaper comprising the improvements according to my invention. Fig. 2 is a side elevation of the upper part of Fig. 1 after the outside wall of the slide has been removed, and Figs. 3, 4 and 5 are vertical cross-sections showing three modifications ofthe improved connection of the rocking lever to the carriage.

Referring first to Figs. 1 and 2, afidesignates the frame of the shaper and Z) the slide movable on the frame and carrying the tool. The slide is driven by the rocl ing, lever c which is provided in known manner with an adjustable sliding bearing (Z, in which the pin f of the gear wheel 6 is journaled. When the gear wheel rotates, the lever 0 rocks to and fro and drives the slide b with it. In order to prevent any lateral movement of the rocking lever being imparted to the slide, in the arrangement shown in Figs. 1 and 2 the driver g, which is otherwise formed in known manner and connected with the slide Z), is made hollow 'and provided with an internal thread, into which a threaded member h is screwed. A pm 2' goes through the latter and through the forked ends of the rocking lever embracing the driver g. The holes in the driver 9 are larger than the diameter of the pin 2'. In this arrangement, in the direction of movement of the slide the rocking lever and the carriage are connected pivotally but without play; as the member in the driver 9 can rotate, however, the rocking lever can turn laterally without the slide participating in such movement, because the pin '5 can move in the holes in the driver 9 which, as mentioned above, are larger than the diameter of the pin.

Figs. 3, 4L and 5 show other modes of attaching the fitting in the driver 9. In the embodiment shown in Fig. 3, the driver 9 has a smooth hole into which is inserted a smooth pin is which is carried vertically but not seized by a screw m screwed in from below, so that it can participate with the form shown in Fig. 4, I provide instead of the screw m a closure member or inserted into guides. in the modification shown in Fig. 5 the pin is is carried by a pin 0, half of I w iich takes lnto a groove in the pin 70 and half into the driver g. p

In the construction known heretofore, the driving wheel 6 always had to be inserted through the front or rear wall of the shaper either by inserting into the rear wall in which it was journaled a bushing of asize corresponding to the diameter of the Wheel, or by providing such a large aperture inrthe front wall that the wheel could be passed through it. This weakening of the carrying walls of the shaper was great disadvantage, because when heavy Work had to be done the guides of the carriage yielded and untrue work was the consequence. In order -to remedy this defect, according to my invention the gear wheel a is no longer made integral with its aXle p but is attached thereto by means of a screw thread 9 or in other suitable manner. It is consequently possible to place the narrow wheel a from above into the interior of the sh'aper before putting the carriage 6 into place, and then to place the axle 1 into its bearing and to connect the axle and the wheel together. This arrangement -,.also has the advantage that the axle 7) and the wheel e can be exchanged independently of one another when one of them becomes worn and, in addition,

a more suitable material can be used for the axle which can be hardened.

I claim 2-- 1. In a shaping machine, the combination with the frame, a slide slidable to and fro thereon, and a lever mounted to rock in the frame, of a hollow driver carried by the slide, a member rotatable in the driver, and a pin carried by said lever and passing laterally through the driver with play and through saidmemberl 2. In a shaping machine, the combination with the frame, a slide slidable to and fro thereon, and a lever mounted to rock in the frame, of arhollow driver carried by the slide, a member screwed into the driver, and

a pin carried by said lever and passing laterally, through the driver with play and through said member.

3. In a shaping machine, the combination 7 with'the' frame, a slide slidable to and fro the sliding movement of the slide the two.

parts being connected to the lever and slide respectively.

In testimony whereof, I have aflixed my signature in presence of two witnesses.

. 7 KARL JUNG. lVitnesses HENRY HAsPnn, VVOLDEMAR HAUPT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. G. I 

